Machine for straightening shafting.



PATENTED JUNE 11, 1907.

R. M. GORREY. v I MACHINE FOR STRAIGHTENING SHAPTING.

APPLIOATION FILED MAY 18. 1906.

3 SHEETS-SHEET 1.

Snvzufoz 28 i hi was as .1": "0km: PEIERS 50., muumcmu, 0. c4

No. 856,625. PATENTED JUNE 11, 1907. R. M. OORREYL MACHINE FOR STRAIGHTENING SHAFTING. APPLICATION FILED MAY 18. 1906.

3 SHEETS-SHEET 2v .11 M Carr-{7 l/Mamas M I 6mm,

Tuz mmms PETERS ca, vusmuuron, D- c No- 856,625. PATENTED JUNE 11, 1907.

- R. M. GORREY. MACHINE FOR STRAIGHTENING SHAPTING.

APPLICATION FILED MAY 18, 1906.

3 SHEETS-SHEET 3.

v w i UNITED STATES PATENT OFFICE.

MACHINE FOR STRAIGHTENING SHAFTING.

Specification of Letters Patent.

Patented June 11, 1907.

Application filed May 18, 1906. Serial No. 317,423.

To all whom it may concern:

Be it known that 1, ROBERT M. Conner, a citizen of the United States, residing at Rochester, in the county of Monroe and State of New York, have invented new and useful improvements in Machines for Straightening Shafting, of which the following is a specilica tion.

This invention relates to a combination centering and straiglitening machine for rectifying irregularities in shafting of anylength, and the primary object of the same is to provide a simple and. effective organization of elements whereby shafting that is out of true may be straightened with ease and facility by one apparatus having parts which are readily dissociated and capable of quick assemblage to acconnnodate the operations of spinning the shafting as well as straightening the same.

The invention consists in the construction and arrangement of the several parts which will be more fully hereinafter set forth.

In the drawings, Figure l is a front elevation of the machine embodying the features of the invention. Fig. 2 is a transverse vertical section through the same taken in the plane of the line 2--2, Fig. '1. Figs. 3, i and 5 are detail views of parts of the machine, Fig. 5 being a section. on the line 5---5, Fig. 4.

Similar numerals of reference refer to like parts throughout the several views.

The numeral 1 designates the base or main frame which is preferably made of cast iron and supports a table 2 having thereon holding blocks 3 with \l-shaped recesses 4 in their upper portions to receive a shaft. These blocks 3 are spaced a sufficient distance to be effective in supporting a shaft at points adjacent to the termination of the bend or irregularity in the shaft to be operated upon by the machine. Held on the bed or table 2 is a supporting rail or bar 5 having an upper inverted V-shaped edge ti, and on this rail or bar a centering chuck, tail stock, and centering head are held, the bar and the said devices being also formed of metal preferably steel. The centering chuck comprises a body 7 formed with a recess 8 in its rear side to receive the rail or bar 5, said chuck being adjustable on the rail or bar and maintained in its adjusted position by clamping devices 9 depending from the lower side of the body 7 and cooperating with the lower edge of the said rail or bar. The body 7 has a head 10 thereon with a central opening 11 and in the said head, chuck members 12 are radially disposed and have their inner terminals projecting into the said opening 11. The chuck members 12 form jaws to hold the shaft at the end while the centering head is caused to operate thereon. The centering head also comprises a body 13 which is adjustable as well as removable on and from the rail or bar 5 and is held in positive position when adjusted by clamping members 9 heretofore set forth. This centering head is adapted to be equipped with a suit able drill chuck which is taken out when the shaft is centered and is replaced by any centering device, but preferably the same as that ordimn'ily used for this purpose, and this centering head will be more fully hereinafter referred to in detail. The drill chuck which is adapted to be used in the centering head is removed when the shaft is centered and it is desired to spin the shaft. Also adjustably and removably mounted on the rail or bar 5 is a tail center body or supporting means l5 having a suitable tail center 16 therein, the said support ing means being also provided with clamping devices 17 similar to the clamping devices 9 and 14 hereinbefore referred to. The center which will be substituted for the drill chuck in the body 13 of the centering head will be similar to the tail center 16. The tail center is used only when straightening the shaft for the purpose of spinning the same, the said device as a whole being capable of being withdrawn from the bar when desired or at any time found necessary.

On the rail or bar 5 a V-rest 18 is also arranged and is held by a vertical screw stem 19 which renders the same adjustable, said screw stem rising from a block or body 20 having a rearwardly opening slot 21 to receive the said rail or bar. This V-rest is used to support one end of the shaft while the other end is being centered.

The table or bed 2 is vertically adjustable on the main frame and is connected to slotted guides 22 engaging studs or bolts 23 on the main frame and arranged in parallelism so as to maintain the table or bed in a true horizontal plane when adjusted. The adjusting means for the bed comprises a jack screw 24 working in a lower socket 25 and swiveled to a block 26 at its upper end, the block being secured to the table. This jack screw carries a beveled pinion 27 thereon close to the under side of the block 26, and cooperating therewith is an adjusted beveled pinion 28 having a shaft 29 with a crank-handle 30. By turning th haft 29 in opposite directions through the medium of the crank-handle 30, the jack screw will be actuated to raise and lower the table or bed.

The upper part of the frame 1 has a head 31 in which is mounted a main shaft 32 having on one extremity a worm-gear 33 and at an intermediate point a pinion 34.- The worm-gear 33 meshes with a worm 35 on a vertical shaft 36 provided with a socketed head 37 to receive a suitable hand bar 38. A plunger 39 is mounted to have vertical movement in the head 31 and in the rear edge thereof are gear teeth 40 which are adapted to mesh with the pinion 34. The lower end of this plunger is disposed in vertical alinement over the longitudinal center plane of the blocks 3 and is adapted to be brought into forceful contact with the shaft to be straightened and held in the said blocks by operating the shaft 36 through the medium of the hand bar 38. On the extremity of the shaft opposite that bearing the worm gear 33,

further means are provided for operating the shaft 32 to particularly straighten small shafting or shafting not requiring so much pressure. This means consists of a head 41 movable on the end of the shaft 32 and adapted to receive a hand bar similar to the bar 38. In fact, the bar 33 may be used for engaging the head 37 or the head 41. The head 41 has a depending weight 42 attached thereto for restoring it to normal position, and within the said head is a pawl 43 to engage a ratchet wheel 44 on the shaft 32. By pulling forwardly on the hand bar engaging the head 41 the pawl 43 will bite into the ratchet wheel 44 and rotate the shaft and cause the plunger 39 to descend with sufficient pressure to straighten small shafts. By releasing the hand bar engaging the head 41, the latter will be restored to normal position by the weight 42 and simultaneously the plunger 39 will be raised to its usual position. In straightening heavy shafting, however, the worm gear 33 is operated through the medium of the worm 35 and considerable pres sure is imposed on the plunger 39 thereby, and the pressure thus produced is steady and effective in performing the operation of straightening.

From the foregoing it will be seen that a very simple and effective machine is provided for spinning and straightening shafting which may be rendered irregular by usage or strain thereon. operable to carry on their several functions, and. when their use is undesirable or the machine, table or bed should be cleared, the several devices held. by the rail or bar 5 maybe The parts are all readily readily detached and afterward quickly assembled in working position. Furthermore, it will be observed that the machine is advantageous in handling shafting of various lengths, in view of the fact that the mechanisms carried by the rail or bar 5 may be adj usted inwardly and outwardly, a considerable range of movement being permitted in this adjustment by extending the opposite extremities of the rail or bar beyond the opposite ends of the table or bed.

lVhat I claim is: I

1. In a machine of the class set forth the combination of a frame, a table adjustably secured to the frame and having means for holding a shaft thereon, a rail held on the table and projecting beyond. the extremities thereof, a centering truck, tail stock and centering head adjustably held and movably disposed on the said rail, a plunger arranged over the table, and a mechanism cooperating with the plunger to impart a forcible or light pressure thereto. I 2. In a machine of the class set forth, the combination of a table having means for supporting a shaft thereon, a vertically movable plunger arranged over the table and provided with gear teeth, a shaft hating a pinion thereon meshing with the teeth of the plunger and also carrying a worm gear, and a ratchet wheel at opposite extremities, and means for actuating the" worm gear and ratchet wheel to impart varying pressure to the plunger.

3. In a machine of the class set forth, the combination of a bed having means for holding a shaft thereon, a rail held on the bed and projecting beyond the extremities thereof, and a centering chuck, tail stock and centering head adjustably and movably disposed on the said rail.

4. In a machine of the class set forth, the combination of a table having means for holding a shaft thereon, a rail secured to the table, a chuck adjustably and removably mounted on the rail, and a shaft-support also removably and adjustably mounted on the rail and adapted to cooperatewith the chuck.

5. In a machine of the class set forth, the combination of a vertically adjustable bed having means thereon for holding a shaft, a

plunger disposed over the bed, a rail secured to the bed, a centering head adjustably and removably applied to the rail, and a tail center also disposed on. the rail.

In testimony whereof, I afhx my signature in presence of two witnesses.

ROBERT M. CORREY.

Witnesses 3 HOWARD J. LEIBER, EDWIN HooeKNEsoN. 

